An effective biaxial tension and compression test method is proposed based on the shortcomings of current research for mechanical properties solid propellants under complex stress states. The equal proportion HTPB (Hydroxyl-terminated polybutadiene) NEPE (NitrateEster Plasticized Polyether) performed at different rates while room temperature, damage morphology tension–compression zone analyzed ...

Pelvic arteriovenous malformations (AVMs) are uncommon entities that can present with symptoms resulting from compression of adjacent structures, ischemia due to 'steal phenomenon' or, rarely, heart failure. We present a case of heart failure in a patient who presented to our facilities for heart transplant and a prior diagnosis of idiopathic dilated cardiomyopathy; further evaluation revealed ...

Graphics Processing Units (GPU) allow for running massively parallel applications offloading the Central Processing Unit (CPU) from computationally intensive resources. However GPUs have a limited amount of memory. In this paper, a trie compression algorithm for massively parallel pattern matching is presented demonstrating 85% less space requirements than the original highly efficient parallel...

Universal data compression algorithms fail to compress genetic sequences. It is due to the specificity of this particular kind of “text.” We analyze in some detail the properties of the sequences, which cause the failure of classical algorithms. We then present a lossless algorithm, biocompress-2, to compress the information contained in DNA and RNA sequences, based on the detection of regulari...

The effect on elastic stockings on ambulatory venous pressure was investigated in 22 limbs with deep venous insufficiency. The failure of some elastic stockings to reduce the ambulatory venous pressure in some limbs is due to the lack of graduated compression, which is caused by ankle-calf disproportion--narrow ankles and wide calves. This can be recognised by using the pressure-girth profile a...

The correct determination of deformation capacity of a structural member will become more important in the future since nonlinear design methods will be used more often. This report deals with the examination of deformation capacity of the concrete compression zone. The influence of size and the effect of transversal reinforcement of prisms under eccentric compression on their deformation capac...

Ultrasonic wave velocity is effective to evaluate anisotropy property and predict rock failure. This paper investigates the correlation between dynamic ultrasonic mechanical properties of sandstones with different buried depths subjected uniaxial compression tests. The circumferential axial sandstone are obtained by means measurements. properties, including Young’s modulus compressive strength,...

INTRODUCTION: Shoulder motion following rotator cuff repair is unavoidable and may results in changes in tension on the repair and changes in compression forces at the rotator cuff footprint. We set out to determine how tension within the rotator cuff tendons and motion of the shoulder affect the footprint compression forces of a rotator cuff repair using multiple repair techniques. Ultimately,...

conclusions after kyphoplasty, her pain was immediately resolved, vertebral body height was restored to normal, and pain score was reduced from 8 to 1. she was discharged with a normal neurological examination and good general condition, and returned to her normal life. in this case, balloon kyphoplasty resulted in the restoration of the vertebral body height, decrease in pain, and returning to...

Previous studies on normal subjects have shown that neck compression causes increased urinary excretion of sodium in the sitting position, but has little or no effect in the recumbent position. In the present study, patients with congestive heart failure have exhibited no increase in urinary sodium excretion after neck compression. P REVIOUS studies" 2 have shown that the decline in sodium excr...